Rust

feat: Implement in-memory shuffle storage for Ballista #94

Job	Run time
linux build test	3m 59s
verify benchmark results (amd64)	14m 19s
macos test	10m 50s
test linux crates	6m 31s
test linux balista	6m 21s
windows test	13m 0s
check linux workspace	2m 34s
Lint	37s
Check Cargo.toml formatting (amd64, stable)	1m 16s
Clippy (amd64, stable)	3m 48s
cargo doc	4m 4s
	1h 7m 19s

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